Patent US 4890158A
Patent number | US 4890158A (click link for details and documents via Google Patents) |
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Title | Recursive noise reduction filter for video test apparatus |
Inventors | Daniel G. Baker, William J. Cooper, Bruce J. Penney |
Company | Tektronix Inc |
Filing date | 1988-09-15 |
Grant date | 1989-12-26 |